Fuji Electric EW50EAG - Page 58

56
3
Selection and application
3-4 Wiring protection
Table 3-11b PVC wiring protected by rated breaking capacity (for short circuits)
Notes: 1 Wiring selection consideration: I
2
t of the wiring t maximum I
2
t of the MCCB (ELCB)
(Short-time wiring tempereture:160°C maximum, continuous region:70°C), and rated current of the wiring t rated current of the MCCB (ELCB).
2 The let-through current(I
2
t) is lower the MCCBs (ELCBs) in the table because short-circuit current can be limited by factors like wiring impedance in an actual
circuit. This lowers thermal stress on the wiring.
MCCB ELCB Rated current (A)
440V
MCCB (ELCB) PVC cable (Note: 1)
Icu
(kA)
Peak let-
through
current
(kA: peak)
Max. let-
through
current I
2
t
(u10
s
A
2
s)
Permissible I
2
t
(u10
s
A
2
s)
Minimum wire
size (mm
2
)
Permissible
current (A)
BW32AAG 3, 5, 10, 15, 20, 30, 32 1.5 2.1 0.03 0.082 2.5 18
BW50AAG 5, 10, 15, 20, 30, 32, 40, 50 1.5 2.1 0.03 0.082 2.5 18
BW100AAG 60, 63, 75, 100 1.5 2.1 0.03 0.082 2.5 18
BW50EAG EW50EAG 5, 10, 15, 20, 30, 32, 40, 50 2.5 3.5 0.08 0.082 2.5 18
BW63EAG EW63EAG 60, 63 2.5 3.5 0.08 0.082 2.5 18
BW100EAG EW100EAG 50, 60, 63, 75, 100 10 10.0 0.60 1.31 10 42
BW160EAG EW160EAG 125, 150, 160 18 22.0 2.60 3.35 16 56
BW250EAG EW250EAG 175, 200, 225, 250 18 22.0 2.60 3.35 16 56
BW400EAG EW400EAG 250, 300, 350, 400 30 35.0 5.70 8.18 25 71
BW630EAG EW630EAG 500, 600, 630 36 47.0 8.75 16.0 35 88
BW800EAG EW800EAG 700, 800 36 47.0 8.75 16.0 35 88
BW125JAG EW125JAG 15 30 8.1 0.113 0.21 4 24
20 30 9.5 0.140 0.21 4 24
30 30 11.0 0.178 0.21 4 24
40, 50, 60, 75, 100, 125 30 10.0 1.65 3.35 16 56
BW160JAG EW160JAG 125, 150, 160 30 26.0 3.15 3.35 16 56
BW250JAG EW250JAG 175, 200, 225, 250 30 26.0 3.15 3.35 16 56
BW32SAG EW32SAG 3, 5, 10, 15, 20, 30, 32 2.5 3.5 0.08 0.082 2.5 18
BW50SAG EW50SAG 5, 10, 15, 20, 30, 32, 40, 50 7.5 8.3 0.41 0.471 6 30
BW63SAG EW63SAG 60, 63 7.5 8.3 0.41 0.471 6 30
BW125SAG EW125SAG 15 36 8.2 0.115 0.21 4 24
20 36 9.65 0.145 0.21 4 24
30 36 11.3 0.183 0.21 4 24
40, 50, 60, 75, 100, 125 36 21.5 1.815 3.35 16 56
BW160SAG EW160SAG 125, 150, 160 36 28.1 3.45 8.18 25 71
BW250SAG EW250SAG 175, 200, 225, 250 36 28.1 3.45 8.18 25 71
BW400SAG EW400SAG 250, 300, 350, 400 36 38.0 6.40 8.18 25 71
BW50RAG EW50RAG 10, 15, 20, 30, 32, 40, 50 10 10.0 0.60 1.31 10 42
BW63RAG EW63RAG 60, 63 10 10.0 0.60 1.31 10 42
BW125RAG EW125RAG 15 50 8.5 0.120 1.31 10 42
20 50 10.0 0.155 3.35 16 56
30 50 12.0 0.195 3.35 16 56
40, 50, 60, 75, 100, 125 50 25.0 2.20 3.35 16 56
BW160RAG EW160RAG 125, 150, 160 50 33.0 4.15 8.18 25 71
BW250RAG EW250RAG 175, 200, 225, 250 50 33.0 4.15 8.18 25 71
BW400RAG EW400RAG 250, 300, 350, 400 50 44.0 7.70 8.18 25 71
BW630RAG EW630RAG 500, 600, 630 50 54.5 10.30 16 35 88
BW800RAG EW800RAG 700, 800 50 54.5 10.30 16 35 88
BW50HAG 15 65 8.55 0.121 0.21 4 24
20 65 10.5 0.160 0.21 4 24
30 65 12.6 0.20 0.21 4 24
40, 50 65 27.3 2.40 3.35 16 56
BW125HAG 15 65 8.55 0.121 0.21 4 24
20
65 10.5 0.160 0.21 4 24
30 65 12.6 0.20 0.21 4 24
40, 50, 60, 75, 100, 125 65 27.3 2.40 3.35 16 56
BW250HAG 125, 150, 160, 175, 200, 225, 250 65 36.2 4.50 8.18 25 71
BW400HAG EW400HAG 250, 300, 350, 400 70 50.0 8.70 16 35 88
BW630HAG EW630HAG 500, 600, 630 70 63.5 11.97 16 35 88
BW800HAG EW800HAG 700, 800 70 63.5 11.97 16 35 88